docs: def sctiks(sc, clkstr):
      """
      Convert a spacecraft clock format string to number of "ticks".
  
      http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/sctiks_c.html
  
      :param sc: NAIF spacecraft identification code.
      :type sc: int
      :param clkstr: Character representation of a spacecraft clock.
      :type clkstr: str
      :return: Number of ticks represented by the clock string.
      :rtype: float
      """
      sc = ctypes.c_int(sc)
      clkstr = stypes.stringToCharP(clkstr)
      ticks = ctypes.c_double()
      libspice.sctiks_c(sc, clkstr, ctypes.byref(ticks))
      return ticks.value